Mexican magnate Carlos Slim has inaugurated a four-level, underground aquarium that is the biggest in Latin America, housing 3,000 animals belonging to 230 species. The first visitors on Friday took an elevator underground to start the tour of the 400,000-gallon glass tank where blue, yellow, orange and green fish swam among sharks and manta rays. In another floor there are several types of jellyfish and a separate massive fish tank houses piranhas, crocodiles and tiny turtles. There is also a small lagoon where visitors can touch a manta ray. Inbursa Aquarium director Alejandro Nasta says the water was brought from the Gulf of Mexico and that he hopes the aquarium will eventually become home to as many as 10,000 marine animals belonging to 307 species.